A cell or organism which has two full sets of chromosomes (is thus diploid), but has a third copy of one of its chromosomes. Organisms which are trisomic generally also suffer from physical and/or mental disabilities or abnormalities.
Selected trisomy links:
© 1997-2006 Healthboard.com.
Healthboard.com is a purely
informational website, and should not be used as a substitute
for professional legal, medical or technical advice.